August Challenge 2019 Division 2
Football, Dilemma, Zombie and the Caves, Distribute Apples
September Challenge 2019 Division 2
(Challenge) Sebi and CPU Design, Chef and Interesting Subsequences , Chef Designed a Network, Doofish Set, Fuzzy Linear Combinations, Biladerim Icin, Easy Fibonacci, Chef and Good Subsequences
September Mega Cook-Off 2019 Division 1
Angry Grandfather, Fitness Exercises
September Lunchtime 2019 Division 1
All Substrings, Find the Sum
October Challenge 2019 Division 1
Even Edges, Chef and Maximum Star Value, Array Modification
December Challenge 2019 Division 1
Addition, Sticky Notes, Chefina and Ranges, Binary XOR
April Cook-Off 2020 Division 1
Tower Counting, Simple Operations
April Lunchtime 2020 Division 1
Triangle Query, Positive Mex
August Lunchtime 2020 Division 1
Game on a Strip, Counting Graphs, Alien Invasion
October Lunchtime 2020 Division 1
Chef Is Just Throwing Random Words, Cute Chef Gift, Chef Likes Good Sequences
September Lunchtime 2020 Division 1
Root the Tree, Robot Detector
UWCOI 2021 (Rated for all)
Organisation, Array Swaps, Efficient Delivery, Hidden Numbers
February Lunchtime 2021 Division 1
Average Sorting, Sed Max, Independent Set
